TwistyPuzzles.com > Museum > Magic Ball (aka Rubik's Sphere) - 58 mm
Ball to Rubik's Cube - Alexander May - Vanishing Inc. Magic shop
1981 Magic Ball Rubik's Cube Style Very Hard to Find New Old Stock - Etsy
Rubiks Cube: Benjy Oliver's 8x8x8 Ball
Amazon.com: Rubik's Cube Rainbow Ball Color Matching Puzzle, Fun Addictive Educational Toy Gift for Adults & 4+ Kids, Develop Hands-On, Memory, Critical Thinking & Problem Solving Skills (Black) : Toys & Games